Fluid dispensing nozzle valve



April 12, 1938.

G. B. NICHOLSON v FLUID DISPENSING NOZZLE VALVE Filed Feb. 23, 1957 2 Sheets-Sheet l INVENTORQ A TTORNEYS.

April 12, 1938.

6. B. NICHOLSON FLUID DISPENS ING NOZZLE VALVE Filed Feb. 25, 19:57

2 Sheets-Sheet 2 w 3 t \L m. a 8 m .w r, 2 A W \M Q\ Md INVENTOR. a. m BY 77 4s- ATTORNEYS Patented Apr. 12, 1 938 r rice FLUID DIS PENSING NozzLEvALvE George B. Nicholson, Erie, Pa. Application February 23, 1937, Serial No. 127,146

4 Claims.

This invention relates to new anduseful improvements in nozzle valves for gasoline dispensing pumps or the llkeytl'ld it is among the objects' thereof to provide a nozzle with a manually operated valve construction which shall be especially suited for controlling the flow of the fluid from the nozzle end when caution is required to prevent overflow of the receiving container or tank.' 1

.Another object of the invention is'the provision of a Valve structure for fluid dispensing nozzles 5 which shallhavea variable leverage acting upon the control valve with a greater leverage for slow flow operations than at full' or maximum flow.

These and other objects of the invention will I j prises a conduit portion I having a threaded fitting 2 for connection witha fluid delivery hose conduit. The member I has an enlarged portion 9 which is mounted in a spider I0 and biased by a coil spring II to normally engage its seat on shoulder 8. The nipple I is connected by a nipple I2 to a nozzle I3 having the usual armored flexible nozzle end I4. The conduit casting I is provided with an eyelet I5 to pass over a hook or lever arm of gasoline dispensing pumps as is the. slot 32 oflthe operating lever l9. 'lustrates the normal position of the operating posed around the valve stem 22 andheld in posi' tion by a knurled'nut 21, to project therebeneath. The valve Z I is accessible by the removal of a cap 28 having an annular recess 23 for receiving a coil spring 3!) which abuts-the upper part of the U valve 2I tonormally-bias it downwardly against its seal 3I. y p

The operating lever I3 'is slotted at 32 to re-. ceive a lever 33 which is'pivoted to the operating lever at 3'4, lever 33- being provided with a contact or wearing plate 35. V ther provided with a notch or slot 36 which cooperateswitha pin 31 extending transversely of lever I3 andfwhat may be termed the cam lever 33, the latter abutting against the recessed portion or groove 38 of'the guard, in which the oper- The lever 33 is fur- Fig. 1 ilating lever rests with its tip in the bottom of the groove 38. In the position of the levers as shown in Fig. 1, both valves 9 and 2| are in their normally closed position, so heldby their respective coil springs I I and 30, and valve stem 22 extends the maximum distance downwardly from the knurled bushing 21. To start flow of fluid through the nozzle end Hi, the operator grips the valve by placing the palm of the hand above the conduit portion I and extending the fingers around and beneath the operating lever I9. During the initial movement of the latter, the cam lever 33 is raised at its pivot point 34 and the bottom end or tip of lever 33 resting against the bottom of groove 38 of guard 16 acts as a fulcrum which develops a greater leverage against the bottom of the valve stem 22 than if the latter were directly contacting the main operating lever I9. This leverage is available only during the travel of the operating lever within the limits of clearance of the pin 31in the slot 36, and when pin'3I abuts against the lever 33 in the bottom of the slot 33, it will lift lever 33 with it for the remainder of the movement of the operating lever I9 until the latter abuts the conduit portion I As shown in the drawings, the leverage of the operating lever I9 is about four to one with the bottom of valve stem 22 as the fulcrum point. During the initial movement of the operating lever, however, the leverage is multiplied through the cam lever 33 to obtain about more leverage, thus clearly minimizing the force required to operate the main lever I9.

By thus multiplying the leverage for moving the valve stem 22 during its initial opening of the main control valve 2|, the operator with very little eifort can obtain more sensitive control of the valve 2|, which is highly desirable to prevent overflow of the receiving tank when it is nearly full.

It is evident that when the main valve 2| is liited from its seat 3|, the force of the fluid passing through conduit I and through the valve chamber 4 will unseat valve 9 and permit fluid flow through the dispensing nozzle 14.

It is evident from the foregoing description of this invention that nozzle valves 'for fluid dispensing pumps or pressure lines made in accordance therewith facilitate the accurate and safe dispensing of fluids, particularly gasoline around filling stations where it is undesirable and gerous to permit any overflow.

Although one embodiment of the invention has been herein illustrated and described, it will be apparent to those skilled in the art that various modifications may be made in the details of construction Without departing from the principles herein set forth.

I claim:

1. In a fluid dispensing nozzle valve, an operating valve having a valve stem projecting from the valve chamber, an operating lever for actuating said stem, a secondary lever pivoted at one end to said operating lever for engaging said stem,

and a stationary abutment for said secondary lever constituting a fulcrum for the free end of said lever during partial movement of the operating lever.

2. In a fluid dispensing nozzle valve, an operating valve having a valve stem projecting from the valve chamber, an operating lever for actuating said stem, said lever being slotted in the region of the valve stem, a second lever disposed in the slot of the operating lever and being pivoted thereto for engaging the end of the valve danstern, means on the operating lever for engaging the second named lever to interlock said levers in response to movement of the operating lever and a stationary abutment for said secondary lever constituting a fulcrum for the free end of said lever during partial movement of the operating lever. I

3. In a fluid dispensing nozzle valve, an operating valve having a valve stem projecting from the valve chamber, an operating lever for actuating said stem, a second lever pivoted to said operating lever for engaging the end of the valve stein in response to movement of the operating lever, means on the operating lever coacting with *th'e' second named lever for interlocking said levers during partial movement of the operating lever and a stationary abutment for said second- ,ary leverconstituting a fulcrum for the free end oi saidlever during partial movement of the operating lever.

4. In a fluid dispensing nozzle valve, an operating valve having a valve stem projecting from the valve chamber, .an operating lever for actuating said stem, said lever having a slotted opening beneath the valve stem, a second lever disposed in said opening and pivoted to the operating lever, a stationary abutment for said second named lever constituting a fulcrum for the free end of said lever, said second named lever having a slot for engagement by a pin provided in the operating lever whereby during partial travel of the latter the second named lever is fulcrumed at one end 'to multiply the leverage acting upon the valve stem and during the remainder of its movement interlocked with the operating lever to displace the valve stem.

1 GEORGE B. NICHOLSON. 

